Results 31 to 40 of about 3,277,772 (345)
Türk Oftalmoloji Dergisi, 2013 Purpose: To evaluate the effects of different lens designs on visual quality among soft spherical contact lens users. Material and Method: Forty eyes of twenty patients from our contact lens unit were included in this study.
Mustafa Demir +2 more
doaj +1 more source
Tomographic Reconstruction using Tilted Laue Analyser Based X-ray Phase-Contrast Imaging [PDF]
Journal of Synchrotron Radiation, 28, 283-291 (2021), 2020 Analyser-Based Phase-Contrast imaging (ABPCI) is a phase-contrast imaging method that produces high contrast images of weakly absorbing materials. However, it is only sensitive to phase variations lying in the diffraction plane of the analyser crystal (i.e in one dimension; 1-D), as it is highly sensitive to phase variations lying in the diffraction ...
arxiv +1 more source
Predicting individual contrast sensitivity functions from acuity and letter contrast sensitivity measurements. [PDF]
, 2016 Contrast sensitivity (CS) is widely used as a measure of visual function in both basic research and clinical evaluation. There is conflicting evidence on the extent to which measuring the full contrast sensitivity function (CSF) offers more functionally ...
Davey, Pinakin Gunvant +4 more
core +1 more source
Ocular hypertension in myopia: analysis of contrast sensitivity [PDF]
, 2018 Purpose: we evaluated the evolution of contrast sensitivity reduction in patients affected by ocular hypertension and glaucoma, with low to moderate myopia.
Arrico, L +4 more
core +1 more source
Measuring contrast sensitivity
Vision Research, 2013 Contrast sensitivity defines the threshold between the visible and invisible, which has obvious significance for basic and clinical vision science. Fechner's 1860 review reported that threshold contrast is 1% for a remarkably wide range of targets and conditions.
Peter J. Bex, Denis G. Pelli
openaire +3 more sources
Spatial contrast sensitivity in adolescents with autism spectrum disorders [PDF]
, 2010 Adolescents with autism spectrum disorders (ASD) and typically developing (TD) controls underwent a rigorous psychophysical assessment that measured contrast sensitivity to seven spatial frequencies (0.5-20 cycles/degree). A contrast sensitivity function
A Bertone +52 more
core +1 more source
The contrast sensitivity of the cat
The Journal of Physiology, 1973 1. The experiments were carried out on pretrigeminal cats.2. By recording potentials evoked from the visual cortex by a grating stimulus, it was established that there was a linear relation between the voltage generated and the logarithm of the contrast of the grating.3.
CAMPBELL FW, MAFFEI L, PICCOLINO, Marco
openaire +5 more sources
Sensitivity to Auditory Velocity Contrast [PDF]
Scientific Reports, 2016 AbstractA natural auditory scene often contains sound moving at varying velocities. Using a velocity contrast paradigm, we compared sensitivity to velocity changes between continuous and discontinuous trajectories. Subjects compared the velocities of two stimulus intervals that moved along a single trajectory, with and without a 1 second inter stimulus
Shannon M. Locke +2 more
openaire +2 more sources
Contrast sensitivity of insect motion detectors to natural images [PDF]
, 2008 How do animals regulate self-movement despite large variation in the luminance contrast of the environment? Insects are capable of regulating flight speed based on the velocity of image motion, but the mechanisms for this are unclear.
O'Carroll, David C. +2 more
core +1 more source
Folia Medica Indonesiana, 2021 This study was to compare the effectiveness of hyperbaric oxygen therapy (HBOT) on contrast and macular light sensitivity improvement in dry type age-related macular degeneration (AMD) patients.
Indriani Kartika Dewi +2 more
doaj +1 more source